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core-js vs GemPages

Based on 2041 and 1 real audits

View core-js details | View GemPages details
Metriccore-jsGemPagesWinner
Performance3755GemPages
Accessibility8892GemPages
Best Practices86100GemPages
SEO9192GemPages
Security6879GemPages
TTFB483ms326msGemPages
Composite7480GemPages
Performance
core-js
37
GemPages
55
Accessibility
core-js
88
GemPages
92
Security
core-js
68
GemPages
79
SEO
core-js
91
GemPages
92
Composite
core-js
74
GemPages
80

GemPages outperforms core-js in 7 of 7 categories, with a stronger composite score (80 vs 74). core-js leads in no categories.

When to choose core-js

core-js doesn't clearly lead GemPages in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.

When to choose GemPages

Choose GemPages when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 2041 audited core-js sites and 1 audited GemPages sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, core-js or GemPages?
Based on real BeaverCheck audits, GemPages sites score higher on Lighthouse performance (55 vs 37 on average).
Which has better security, core-js or GemPages?
GemPages sites score higher on security analysis (79 vs 68 on average).
Which has better accessibility, core-js or GemPages?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor GemPages (92 vs 88). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, core-js or GemPages?
GemPages sites score higher on Lighthouse SEO signals (92 vs 91 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), core-js or GemPages?
GemPages sites show lower Time to First Byte (326 ms vs 483 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose core-js or GemPages for my website?
Both platforms have trade-offs. GemPages scores higher on overall composite score while core-js may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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